Matches in DBpedia 2014 for { ?s ?p Arthur Gray Leonard (March 15, 1865 – 17 December 1932) was an American researcher, geologist and educator. The first State Geologist of North Dakota, he was also a professor of geology at the University of North Dakota and made contributions to the knowledge of lignite coal and its relation to geologic time.. }
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- A._G._Leonard abstract "Arthur Gray Leonard (March 15, 1865 – 17 December 1932) was an American researcher, geologist and educator. The first State Geologist of North Dakota, he was also a professor of geology at the University of North Dakota and made contributions to the knowledge of lignite coal and its relation to geologic time.".
- A._G._Leonard comment "Arthur Gray Leonard (March 15, 1865 – 17 December 1932) was an American researcher, geologist and educator. The first State Geologist of North Dakota, he was also a professor of geology at the University of North Dakota and made contributions to the knowledge of lignite coal and its relation to geologic time.".